CN210928624U - Biogas slurry filtering and irrigating device - Google Patents

Biogas slurry filtering and irrigating device Download PDF

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Publication number
CN210928624U
CN210928624U CN201921963260.3U CN201921963260U CN210928624U CN 210928624 U CN210928624 U CN 210928624U CN 201921963260 U CN201921963260 U CN 201921963260U CN 210928624 U CN210928624 U CN 210928624U
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China
Prior art keywords
pipeline
biogas slurry
filter
filtering
clean water
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Expired - Fee Related
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CN201921963260.3U
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Chinese (zh)
Inventor
刘洋
陈晓芬
董力洪
刘佳
万里平
曹晓林
龚贵金
药林桃
罗翔
陈立才
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Jiangxi Zhenghe Ecological Agriculture Co ltd
Agricultural Engineering Research Institute Jiangxi Academy Of Agricultural Sciences
Institute of Soil Fertilizer Resources and Environment of Jiangxi Academy of Agricultural Sciences
Original Assignee
Jiangxi Zhenghe Ecological Agriculture Co ltd
Agricultural Engineering Research Institute Jiangxi Academy Of Agricultural Sciences
Institute of Soil Fertilizer Resources and Environment of Jiangxi Academy of Agricultural Sciences
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Priority to CN201921963260.3U priority Critical patent/CN210928624U/en
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Abstract

The utility model relates to the technical field of biogas slurry treatment, in particular to a biogas slurry filtering and irrigating device, which comprises a biogas slurry pipeline, wherein one end of the biogas slurry pipeline is communicated with a biogas slurry pool, the other end of the biogas slurry pipeline is communicated with an irrigating pipeline, and a plurality of filtering devices are connected in series on the biogas slurry pipeline; one end of the clean water pipeline is communicated with the clean water tank, and the other end of the clean water pipeline is communicated with the irrigation pipeline after being converged with the tail end of the biogas slurry pipeline; the first pumping device is connected in series with the upstream of the biogas slurry pipeline; the second pumping device is connected in series with the upstream of the clean water pipeline; one end of the backflow pipeline is communicated with the tail end of the biogas slurry pipeline, and the other end of the backflow pipeline is communicated with the clean water pipeline; the connecting part of the backflow pipeline and the biogas slurry pipeline is positioned at the downstream of the filtering device, the connecting part of the backflow pipeline and the clean water pipeline is positioned at the downstream of the second pumping device, and the backflow pipeline is provided with a first valve. The utility model provides a natural pond liquid filters irrigation equipment has simple structure, with low costs, advantage that the filter effect is good.

Description

Biogas slurry filtering and irrigating device
Technical Field
The utility model relates to a natural pond liquid treatment technical field, concretely relates to natural pond liquid filters irrigation equipment.
Background
With the large-scale development of domestic livestock and poultry breeding industry, the fecal sewage treatment of the livestock and poultry breeding farm becomes a concern for people, and the construction of large and medium-sized biogas projects provides a powerful solution for the fecal sewage treatment of the large-scale livestock and poultry breeding farm. The method takes the feces of the farm as the fermentation raw material to obtain the clean energy biogas, thereby improving the environment of the farm and reducing the pressure on the environment caused by the feces. But simultaneously, large and medium-sized biogas projects generate a large amount of anaerobic residue biogas slurry, and if the anaerobic residue biogas slurry is not fully and reasonably utilized, the biogas slurry can cause secondary pollution to the environment again, so that the development of large-scale aquaculture is restricted.
The existing main treatment mode of the biogas slurry mainly comprises two modes of direct artificial irrigation and artificial wetland digestion, the two modes easily cause secondary pollution, accurate irrigation technologies such as drip irrigation and the like and equipment are adopted for carrying out biogas slurry irrigation, and the method is an effective way and mode for recycling the biogas slurry. The biogas slurry contains a large amount of organic suspended matters and microorganisms, and algae, bacterial clusters and other substances are easy to propagate in the pipeline, so that the pipeline and an emitter are easy to block. At present, the existing domestic related filtering equipment can not meet the requirements of biogas slurry irrigation engineering, which causes the difficulty in large-area popularization of the biogas slurry irrigation engineering.
In order to solve the problem that natural pond liquid irrigation equipment easily blocks up, chinese utility model patent document with document number CN102527147A discloses a back flush unit is united with aqueous vapor to stage filtration that natural pond liquid was irrigated, include: the sewage treatment system comprises four systems of a grading sewage blocking box, water inlet and liquid inlet, a laminated net type filter group and water-gas combined backwashing. The utility model discloses make up into filter group with lamination formula filter and screen filter, as the dual filter equipment of natural pond liquid, can not only improve filtration efficiency to conveniently implement the backwash, combine the aqueous vapor to jointly wash the function, improved the work efficiency of device more, and difficult jam.
However, the above technical solutions still have disadvantages in practical use, which are as follows: in the technical scheme, an air compression pump is independently arranged for cleaning the filtering device, and irrigation water in an air joint pipeline is used for reversely washing the filtering device, so that the defect that the structure of irrigation equipment is more complex and the use cost is higher due to the added air compression pump and matched pipelines thereof is overcome; meanwhile, when the pipeline is backwashed by air, the biogas slurry at the sewage discharge port is easy to splash due to the instability of the flow rate of the air in the pipeline, so that the surrounding environment is polluted.
Disclosure of Invention
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the natural pond liquid among the prior art and filtering irrigation equipment and can lead to the structure to become complicated, defect that use cost rises when carrying out the backwash, and then provide a simple structure can carry out the natural pond liquid of backwash and filter irrigation equipment.
Therefore, the utility model provides a technical scheme as follows:
a biogas slurry filtering irrigation device comprising:
one end of the biogas slurry pipeline is communicated with the biogas slurry pool, the other end of the biogas slurry pipeline is communicated with the irrigation pipeline, and a plurality of filtering devices are connected in series on the biogas slurry pipeline;
one end of the clean water pipeline is communicated with the clean water tank, and the other end of the clean water pipeline is communicated with the irrigation pipeline after being converged with the tail end of the biogas slurry pipeline;
the first pumping device is connected in series with the upstream of the biogas slurry pipeline and is suitable for pumping biogas slurry from the biogas slurry pool to the biogas slurry pipeline;
the second pumping device is connected in series with the upstream of the clean water pipeline and is suitable for pumping the clean water from the clean water tank to the clean water pipeline;
further comprising:
one end of the backflow pipeline is communicated with the tail end of the biogas slurry pipeline, and the other end of the backflow pipeline is communicated with the clean water pipeline; the connecting part of the backflow pipeline and the biogas slurry pipeline is positioned at the downstream of the filtering device, the connecting part of the backflow pipeline and the clean water pipeline is positioned at the downstream of the second pumping device, and the backflow pipeline is provided with a first valve.
As a preferred technical solution, the method further comprises:
the second valve is arranged at the tail end of the biogas slurry pipeline and is positioned at the downstream of the communication part of the biogas slurry pipeline and the backflow pipeline;
and the third valve is arranged at the tail end of the clean water pipeline and is positioned at the downstream of the communication part of the clean water pipeline and the backflow pipeline.
As a preferred technical solution, the method further comprises:
the blending tank is arranged at the junction of the clean water pipeline and the biogas slurry pipeline and communicated with the clean water pipeline, the biogas slurry pipeline and the irrigation pipeline.
As a preferred technical scheme, the mixing tank is provided with an injection port.
As a preferable technical scheme, the filtering device comprises a volcanic rock filter, a quartz sand filter, a net filter and a laminated filter which are sequentially connected in series from a biogas slurry pool to an irrigation pipeline.
As a preferred technical scheme, the first pumping device is arranged between the biogas slurry pool and the volcanic rock filter and is suitable for pumping the biogas slurry in the sedimentation tank into the biogas slurry pipeline.
As an optimal technical scheme, still be provided with the fourth valve between first pumping installations and the volcanic filter, be provided with first drain between volcanic filter and the fourth valve, be provided with the second drain between volcanic filter and the quartz sand filter, be provided with the third drain between quartz sand filter and the net filter, be provided with the fourth drain between net filter and the lamination formula filter, first drain, second drain, third drain, fourth drain all are provided with the blowdown valve.
As an alternative technical scheme, a fourth valve is further arranged between the first pumping device and the volcanic rock filter, and a first drain outlet is arranged between the volcanic rock filter and the fourth valve;
a second sewage draining outlet is formed between the volcanic rock filter and the net type filter, the second sewage draining outlet and the quartz sand filter are connected in parallel on the biogas pipeline, and a fifth valve and a sixth valve are respectively arranged at the upstream and the downstream of the second sewage draining outlet;
a third sewage draining outlet is arranged between the mesh filter and the laminated filter;
and the first sewage draining port, the second sewage draining port and the third sewage draining port are all provided with sewage draining valves.
As a preferred technical scheme, still include the sedimentation tank, the sedimentation tank sets up in natural pond liquid pond upstream, the sedimentation tank includes:
the sedimentation area is vertically arranged in the sedimentation tank;
the filtering area and the settling area are vertically arranged in the settling tank side by side;
the filtering and precipitating areas are communicated with the bottom.
As a preferred technical scheme, the filtering area comprises an upper section and a lower section, and the upper section filtering area is communicated with the lower section filtering area through a filter plate.
As a preferred technical scheme, the upper part of the upper filtering area is provided with a straw filtering layer.
As a preferred technical scheme, the irrigation pipeline is formed by connecting a plurality of irrigation branch pipes in parallel, valves are installed at the tail ends of the irrigation branch pipes, and a plurality of douches are arranged on each irrigation branch pipe.
The utility model provides a technical scheme has following technological effect:
1. the utility model provides an among the irrigation equipment, include: one end of the biogas slurry pipeline is communicated with the biogas slurry pool, the other end of the biogas slurry pipeline is communicated with the irrigation pipeline, and a plurality of filtering devices are connected in series on the biogas slurry pipeline; one end of the clean water pipeline is communicated with the clean water tank, and the other end of the clean water pipeline is communicated with the irrigation pipeline after being converged with the tail end of the biogas slurry pipeline; the first pumping device is connected in series with the upstream of the biogas slurry pipeline and is suitable for pumping biogas slurry from the biogas slurry pool to the biogas slurry pipeline; the second pumping device is connected in series with the upstream of the clean water pipeline and is suitable for pumping the clean water from the clean water tank to the clean water pipeline; one end of the backflow pipeline is communicated with the tail end of the biogas slurry pipeline, and the other end of the backflow pipeline is communicated with the clean water pipeline; the connecting part of the backflow pipeline and the biogas slurry pipeline is positioned at the downstream of the filtering device, the connecting part of the backflow pipeline and the clean water pipeline is positioned at the downstream of the second pumping device, and the backflow pipeline is provided with a first valve.
In the structure, the biogas slurry enters the farmland through the irrigation pipeline after being filtered by the biogas slurry pipeline and the plurality of filtering devices, and is mixed and diluted with clear water conveyed out from the clear water pipeline before entering the farmland. When the filter device needs to be cleaned, the first valve on the backflow pipeline is opened, clean water sequentially passes through the clean water pipeline and the backflow pipeline to enter the tail end of the biogas slurry pipeline, and then reversely passes through the filter device in the biogas slurry pipeline to clear the filter device. In the process, power elements such as an air compressor, a water pump and the like and redundant branches matched with the power elements are not required to be additionally arranged for cleaning the filtering device, and the filtering device can be cleaned only by adding one return pipeline, so that the complexity of the equipment is effectively reduced, and the construction cost of the equipment is reduced.
2. The utility model provides an among the irrigation equipment, still include: the second valve is arranged at the tail end of the biogas slurry pipeline and is positioned at the downstream of the communication part of the biogas slurry pipeline and the backflow pipeline; and the third valve is arranged at the tail end of the clean water pipeline and is positioned at the downstream of the communication part of the clean water pipeline and the backflow pipeline.
In above-mentioned structure, when filter equipment was washd to needs, after closing second gate and third gate, can make in the whole conduction of pressure of second pumping installations to natural pond liquid pipeline, the clearance that is favorable to the jam after the washing pressure increase in the natural pond liquid pipeline.
3. The utility model provides an among the irrigation equipment, still include the blending tank, set up in the terminal department of converging of clear water pipeline and natural pond liquid pipeline, intercommunication clear water pipeline, natural pond liquid pipeline and irrigation pipeline. The existence of blending tank can make the mixed region of clear water and natural pond liquid increase, is favorable to better dilution natural pond liquid, is favorable to the crop to absorb the utilization more.
4. The utility model provides an among the irrigation equipment, be provided with the sprue on the blending tank. The injection port can be used for injecting substances such as chemical fertilizers or cleaning agents into the mixing tank, so that integrated irrigation of biogas slurry, water and fertilizers is conveniently realized, and an irrigation pipeline is also conveniently cleaned.
5. The utility model provides an among the irrigation equipment, filter equipment includes volcanic rock filter, quartz sand filter, net filter, the lamination formula filter that establishes ties in proper order to irrigation pipe from the natural pond liquid pond. The particles which can be filtered by the volcanic rock filter, the quartz sand filter, the net filter and the laminated filter are gradually reduced from big to small, and the biogas residues can be more effectively removed through the step-by-step filtering.
7. The utility model provides an among the irrigation equipment, still be provided with the fourth valve between first pumping installations and the volcanic filter, be provided with first drain between volcanic filter and the fourth valve, be provided with the second drain between volcanic filter and the quartz sand filter, be provided with the third drain between quartz sand filter and the net filter, be provided with the fourth drain between net filter and the lamination formula filter, first drain, second drain, third drain, fourth drain department all are provided with the blowdown valve.
In the structure, after the fourth valve is closed, the sewage valve at the upstream of the corresponding filtering device is opened to realize independent cleaning of the filtering device, so that the cleaning effect of a single filtering device is promoted.
8. In the irrigation device provided by the utility model, a fourth valve is arranged between the first pumping device and the volcanic rock filter, and a first sewage draining port is arranged between the volcanic rock filter and the fourth valve; a second sewage draining outlet is formed between the volcanic rock filter and the net type filter, the second sewage draining outlet and the quartz sand filter are connected in parallel on the biogas pipeline, and a fifth valve and a sixth valve are respectively arranged at the upstream and the downstream of the second sewage draining outlet; a third sewage draining outlet is arranged between the mesh filter and the laminated filter; and the first sewage draining port, the second sewage draining port and the third sewage draining port are all provided with sewage draining valves.
The structure is an alternative mode of a sewage draining outlet arrangement mode, the purpose of independently cleaning the filtering device can be realized, and the cleaning effect of a single filtering device is promoted.
9. The utility model provides an among the irrigation equipment, still include the sedimentation tank, include: the sedimentation area is vertically arranged in the sedimentation tank; the filtering area and the settling area are vertically arranged in the settling tank side by side; the filtration and precipitation zones are in communication. Compare in and set the sedimentation tank to the way that single pond only does the sediment, divide the sedimentation tank into sedimentation zone and filtering area after, can play the primary filter effect to natural pond liquid, reduce low reaches filter equipment's operating pressure, promote natural pond liquid filter effect.
11. The utility model provides an among the irrigation equipment, the upper reaches department of filtering area is provided with the straw filter layer. The straw filter layer has the advantage of convenient for obtaining materials on the one hand, and on the other hand, the straw filter layer can be used as an organic fertilizer after being dried and fermented, thereby playing a multi-purpose effect.
To sum up, the utility model provides a natural pond liquid filters irrigation equipment has simple structure, with low costs, advantage that the filter effect is good.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of an embodiment of an irrigation device provided by the present invention;
FIG. 2 is a schematic structural view of an alternative embodiment of the irrigation device shown in FIG. 1;
fig. 3 is a schematic plan view of a settling tank in the irrigation device provided by the present invention;
description of reference numerals:
1. a biogas slurry pipeline; 2. a biogas slurry pool; 3. an irrigation pipeline; 4. a sedimentation tank; 5. a clear water pipeline; 6. a clean water tank; 7. a first pumping device; 8. a second pumping device; 9. a return line; 10. a first valve; 11. A second valve; 12. a third valve; 13. a mixing tank; 15. a volcanic rock filter; 16. a quartz sand filter; 17. a screen filter; 18. a laminated filter; 19. a fourth valve; 20. a first drain port; 21. a second sewage draining outlet; 22. a third sewage draining outlet; 23. a fourth sewage draining outlet; 25. a fifth valve; 26. a sixth valve; 27. a settling zone; 28. a filtration zone; 29. a straw filter layer; 30. and (4) irrigating branch pipes.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
The concept to be explained in advance is that all the upstream and downstream mentioned in this embodiment are based on the flowing direction of the biogas slurry from the sedimentation tank 4 to the irrigation pipeline 3, the side close to the sedimentation tank 4 is the upstream, and the side close to the irrigation pipeline 3 is the downstream.
Referring to fig. 1, for the utility model provides a specific embodiment, this embodiment is a natural pond liquid filters irrigation equipment for irrigate after filtering natural pond liquid. The present embodiment includes: one end of the biogas slurry pipeline 1 is communicated with the biogas slurry pool 2, the other end of the biogas slurry pipeline is communicated with the irrigation pipeline 3, and a plurality of filtering devices are connected in series on the biogas slurry pipeline 1; one end of the clear water pipeline 5 is communicated with the clear water tank 6, and the other end of the clear water pipeline 5 is communicated with the irrigation pipeline 3 after being converged with the tail end of the biogas slurry pipeline 1; the first pumping device 7 is connected in series with the upstream of the biogas slurry pipeline 1 and is suitable for pumping biogas slurry from the biogas slurry pool 2 to the biogas slurry pipeline 1; a second pumping device 8, connected in series upstream of the clean water line 5, adapted to pump clean water from the clean water tank 6 into the clean water line 5; one end of the backflow pipeline 9 is communicated with the tail end of the biogas slurry pipeline 1, and the other end of the backflow pipeline is communicated with the clear water pipeline 5; the communication position of the backflow pipeline 9 and the biogas slurry pipeline 1 is positioned at the downstream of the filtering device, the communication position of the backflow pipeline 9 and the clean water pipeline 5 is positioned at the downstream of the second pumping device 8, and the backflow pipeline 9 is provided with a first valve 10.
In the structure, the biogas slurry is filtered by the biogas slurry pipeline 1 and the plurality of filtering devices, then enters the farmland through the irrigation pipeline 3, and is mixed and diluted with clear water conveyed out from the clear water pipeline 5 before entering the farmland. When the filtering device needs to be cleaned, the first valve 10 on the backflow pipeline 9 is opened, clean water sequentially passes through the clean water pipeline 5 and the backflow pipeline 9 to enter the tail end of the biogas slurry pipeline 1, and then reversely passes through the filtering device in the biogas slurry pipeline 1, so that the filtering device is cleaned. In the process, power elements such as an air compressor, a water pump and the like and redundant branches matched with the power elements are not required to be additionally arranged for cleaning the filtering device, and the filtering device can be cleaned only by adding one return pipeline 9, so that the complexity of the equipment is effectively reduced, and the construction cost of the equipment is reduced.
In order to increase the water pressure when the second pumping device 8 reversely cleans, the device further comprises: the second valve 11 is arranged at the tail end of the biogas slurry pipeline 1 and is positioned at the downstream of the communication part of the biogas slurry pipeline 1 and the return pipeline 9; and a third valve 12 arranged at the tail end of the clean water pipeline 5 and positioned at the downstream of the communication part of the clean water pipeline 5 and the return pipeline 9. After the second valve 11 and the third valve 12 are closed, the water pressure applied to the backflow pipeline 9 by the second pumping device 8 can all reach the biogas slurry pipeline 1, the irrigation pipeline 3 cannot divide the water pressure of the clear water, and the water pressure during cleaning is guaranteed.
In order to provide a sufficient mixing area for clear water and biogas slurry, the device also comprises a mixing tank 13 which is arranged at the junction of the tail ends of the clear water pipeline 5 and the biogas slurry pipeline 1 and is communicated with the clear water pipeline 5, the biogas slurry pipeline 1 and the irrigation pipeline 3. And the mixing tank 13 is provided with an injection port. The injection port can be used for injecting substances such as chemical fertilizers or cleaning agents into the mixing tank 13, so that integrated irrigation of biogas slurry, water and fertilizers is conveniently realized, and the irrigation pipeline 3 is also conveniently cleaned.
The filtering device comprises a volcanic rock filter 15, a quartz sand filter 16, a net filter 17 and a laminated filter 18 which are sequentially connected in series from the biogas slurry pool 2 to the irrigation pipeline 3. The volcanic filter 15 and the quartz sand filter 16 are both tank-shaped, and both ends are respectively provided with a liquid inlet and a liquid outlet, and the interior of the tank-shaped volcanic filter and the interior of the tank-shaped quartz sand filter are respectively filled with volcanic and quartz sand. The mesh filter 17 and the laminated filter 18 have the same general commercial form. The first pumping device 7 is arranged between the biogas slurry pool 2 and the volcanic rock filter 15 and is suitable for pumping biogas slurry in the biogas slurry pool 2 to the biogas slurry pipeline 1. The filtering particles of the submerged volcanic rock filter 15, the quartz sand filter 16, the screen filter 17 and the laminated filter 18 are gradually reduced, and biogas residues can be more effectively removed through the step-by-step filtering.
A fourth valve 19 is further arranged between the first pumping device 7 and the volcanic rock filter 15, and the first pumping device 7 can not be impacted by reverse flow after the fourth valve 19 is closed.
As an embodiment of the arrangement of the sewage draining port, a fourth valve 19 is further arranged between the first pumping device 7 and the volcanic rock filter 15, and a first sewage draining port 20 is arranged between the volcanic rock filter 15 and the fourth valve 19; a second sewage draining port 21 is arranged between the volcanic rock filter 15 and the mesh filter 17, the second sewage draining port 21 and the quartz sand filter 16 are arranged on the biogas slurry pipeline 1 in parallel, and a fourth valve 19 and a fifth valve 25 are respectively arranged at the upstream and the downstream of the second sewage draining port 21; a third sewage draining outlet 22 is arranged between the mesh filter 17 and the laminated filter 18; and the first sewage draining port 20, the second sewage draining port 21 and the third sewage draining port 22 are all provided with sewage draining valves.
The structure is a preferred implementation mode of a sewage draining outlet arrangement mode, and the purpose of independently cleaning the filtering device can be achieved. Specifically, when the laminated filter 18 needs to be cleaned, the fourth valve 19, the fifth valve 25 and the sixth valve 26 are closed, the drain valve on the third drain outlet 22 is opened, and other drain valves are closed; when the mesh filter 17 needs to be cleaned, the fourth valve 19 and the fifth valve 25 are closed, the sewage discharge valve on the second sewage discharge port 21 and the sixth valve 26 are opened, and other sewage discharge valves are closed; when the quartz sand filter 16 needs to be cleaned, the fourth valve 19 and the sixth valve 26 are closed, the fifth valve 25 and the blowdown valves on the second blowdown port 21 are opened, and other blowdown valves are closed; when the volcanic rock filter 15 needs to be cleaned, the fourth valve 19 is closed, the fifth valve 25 and the sixth valve 26 are opened, the sewage valve on the first sewage discharge port 20 is opened, and other sewage valves are closed.
As an alternative embodiment of the above-mentioned drain outlet, referring to fig. 2, a first drain outlet 20 is disposed between the volcanic rock filter 15 and the fourth valve 19, a second drain outlet 21 is disposed between the volcanic rock filter 15 and the quartz sand filter 16, a third drain outlet 22 is disposed between the quartz sand filter 16 and the mesh filter 17, a fourth drain outlet 23 is disposed between the mesh filter 17 and the laminated filter 18, and after the fourth valve 19 is closed by disposing drain valves at the first drain outlet 20, the second drain outlet 21, the third drain outlet 22 and the fourth drain outlet 23, the drain valves at the upstream of the corresponding filtering devices are opened, so that the filtering devices can be cleaned individually, and the cleaning effect of a single filtering device is improved.
Referring to fig. 3, the present embodiment further includes a sedimentation tank 4, where the sedimentation tank 4 includes: the sedimentation zone 27 is vertically arranged in the sedimentation tank 4; the filtering area 28 and the settling area 27 are vertically arranged in the settling tank 4 side by side; the filtration zone 28 and the settling zone 27 are in communication. The filtering area 28 comprises an upper section and a lower section, and the upper section filtering area 28 and the lower section filtering area 28 are communicated through a filtering plate. A straw filter layer 29 is arranged at the upstream of the upper-section filtering area 28. Compare in setting sedimentation tank 4 to the way that single pond only does the sediment, divide sedimentation tank 4 into behind sedimentation zone 27 and the filtering area 28, can play the prefiltration effect to natural pond liquid, reduce low reaches filter equipment's operating pressure, promote natural pond liquid filter effect. The straw filtering layer 29 has the advantage of convenient material acquisition on the one hand, and on the other hand, the straw filtering layer 29 can also be used as an organic fertilizer after being dried and fermented, thereby playing a multi-purpose effect.
The action process of the irrigation device is as follows:
when irrigation is needed, the second valve 11, the third valve 12 and the fourth valve 19 are opened, and the rest valves, the drain valves and the valves at the tail parts of the irrigation branch pipes 30 are all closed; the biogas slurry enters the biogas slurry tank 2 from the sedimentation tank 4, passes through a biogas slurry pipeline 1, sequentially passes through a vesuvianite filter, a quartz sand filter 16, a net filter 17 and a laminated filter 18, passes through a second valve 11, and then enters a mixing tank 13; clean water in the clean water tank 6 passes through the screen filter 17 and the laminated filter 18 in sequence by using the clean water pipeline 5, and then enters the mixing tank 13 through the third valve 12; after being filtered in the mixing tank 13, the biogas slurry is mixed with clear water and fertilizer and then enters the irrigation pipeline 3, and liquid is discharged through the irrigators on the irrigation branch pipes 30.
When the irrigation pipeline 3 is cleaned, the second valve 11 and the first valve 10 are closed, the third valve 12 and the valves at the tail parts of the irrigation branch pipes 30 are opened, water in the clean water tank 6 is pumped by the water pump to enter the clean water pipeline 5, enters the mixing tank 13 through the mesh filter 17, the laminated filter 18 and the third valve 12 to be mixed with cleaning agents, then enters the irrigation pipeline 3 to be cleaned, and is discharged through the valves at the tail parts of the irrigation branch pipes 30.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims (12)

1. A biogas slurry filtering irrigation device comprising:
one end of the biogas slurry pipeline is communicated with the biogas slurry pool, the other end of the biogas slurry pipeline is communicated with the irrigation pipeline, and a plurality of filtering devices are connected in series on the biogas slurry pipeline;
one end of the clean water pipeline is communicated with the clean water tank, and the other end of the clean water pipeline is communicated with the irrigation pipeline after being converged with the tail end of the biogas slurry pipeline;
the first pumping device is connected in series with the upstream of the biogas slurry pipeline and is suitable for pumping biogas slurry from the biogas slurry pool to the biogas slurry pipeline;
the second pumping device is connected in series with the upstream of the clean water pipeline and is suitable for pumping the clean water from the clean water tank to the clean water pipeline;
it is characterized by also comprising:
one end of the backflow pipeline is communicated with the tail end of the biogas slurry pipeline, and the other end of the backflow pipeline is communicated with the clean water pipeline; the connecting part of the backflow pipeline and the biogas slurry pipeline is positioned at the downstream of the filtering device, the connecting part of the backflow pipeline and the clean water pipeline is positioned at the downstream of the second pumping device, and the backflow pipeline is provided with a first valve.
2. The biogas slurry filtering irrigation device according to claim 1, further comprising:
the second valve is arranged at the tail end of the biogas slurry pipeline and is positioned at the downstream of the communication part of the biogas slurry pipeline and the backflow pipeline;
and the third valve is arranged at the tail end of the clean water pipeline and is positioned at the downstream of the communication part of the clean water pipeline and the backflow pipeline.
3. The biogas slurry filtering irrigation device according to claim 1, further comprising:
the blending tank is arranged at the junction of the clean water pipeline and the biogas slurry pipeline and communicated with the clean water pipeline, the biogas slurry pipeline and the irrigation pipeline.
4. The biogas slurry filtering irrigation device as claimed in claim 3, wherein the mixing tank is provided with an injection port.
5. The biogas slurry filtering irrigation device according to claim 1, wherein the filtering device comprises a volcanic rock filter, a quartz sand filter, a mesh filter and a laminated filter which are connected in series from a biogas slurry pool to an irrigation pipeline.
6. The biogas slurry filtering irrigation device as claimed in claim 5, wherein the first pumping device is arranged between the biogas slurry tank and the volcanic rock filter and is adapted to pump biogas slurry in the biogas slurry tank into the biogas slurry pipeline.
7. The biogas slurry filtering irrigation device according to claim 6, wherein a fourth valve is further arranged between the first pumping device and the volcanic filter, a first sewage discharge port is arranged between the volcanic filter and the fourth valve, a second sewage discharge port is arranged between the volcanic filter and the quartz sand filter, a third sewage discharge port is arranged between the quartz sand filter and the mesh filter, a fourth sewage discharge port is arranged between the mesh filter and the laminated filter, and sewage discharge valves are arranged at the first sewage discharge port, the second sewage discharge port, the third sewage discharge port and the fourth sewage discharge port.
8. The biogas slurry filtering irrigation device according to claim 6, wherein a fourth valve is arranged between the first pumping device and the volcanic rock filter, and a first drain outlet is arranged between the volcanic rock filter and the fourth valve;
a second sewage draining outlet is formed between the volcanic rock filter and the net type filter, the second sewage draining outlet and the quartz sand filter are connected in parallel on the biogas pipeline, and a fifth valve and a sixth valve are respectively arranged at the upstream and the downstream of the second sewage draining outlet;
a third sewage draining outlet is arranged between the mesh filter and the laminated filter;
and the first sewage draining port, the second sewage draining port and the third sewage draining port are all provided with sewage draining valves.
9. The biogas slurry filtering irrigation device according to claim 5, further comprising a sedimentation tank disposed upstream of the biogas slurry tank, the sedimentation tank comprising:
the sedimentation area is vertically arranged in the sedimentation tank;
the filtering area and the settling area are vertically arranged in the settling tank side by side;
the filtering area is communicated with the settling area.
10. The biogas slurry filtering irrigation device as claimed in claim 9, wherein the filtering area comprises an upper filtering area and a lower filtering area, and the upper filtering area and the lower filtering area are communicated through a filter plate.
11. The biogas slurry filtering irrigation device as recited in claim 10, wherein a straw filtering layer is disposed upstream of the upper filtering area.
12. The biogas slurry filtering irrigation device according to any one of claims 1 to 11, wherein the irrigation pipeline is composed of a plurality of irrigation branch pipes connected in parallel, valves are installed at the tail ends of the irrigation branch pipes, and each irrigation branch pipe is provided with a plurality of emitters.
CN201921963260.3U 2019-11-13 2019-11-13 Biogas slurry filtering and irrigating device Expired - Fee Related CN210928624U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110651583A (en) * 2019-11-13 2020-01-07 江西省农业科学院农业工程研究所 Biogas slurry filtering and irrigating device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110651583A (en) * 2019-11-13 2020-01-07 江西省农业科学院农业工程研究所 Biogas slurry filtering and irrigating device

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